Half to winslow wood



(Nb Model.)

- A. N. WOLF.

ROLL- R ILL. No. 288,750.: Patented N0v.,;2 0, 1888.

W 'Ezesses; W

p UNITED STAT-Es PATENT OFFion.

ABRAHAM N. WOLF, OF ALLENTOWN, PENNSYLVANIA, ASSIGNOR OF ONE- HALF TO .WINSLOW WOOD, OF SAME PLACE.

ROLLER-MILL.

SPECIFICATION focming part of Letters Patent No. 288,750, dated November 20, 1883. Application filed August 10, 1883. (No model.)

To allwhom it may concern.-

Be it known that LABRAHAM N. WOLF,

' of Allentown, in the county of Lehigh and State of Pennsylvania, have invented certain new and useful Improvements in Roller-Mills; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use it, reference being had to the accompanying drawings, which form part of this specification.

My invention relates to an improvement in roller-mills, which is applicable to inillshaving two ormore pairs of rollers; and it consists in the combination, in a roller-mill, of the top plate or frame having openings through each of its ends to receive the rolls, and an opening through its center to receive the gears, with fast rolls, which are secured to a single shaft, and slow rolls, which are secured to different shafts, awide pinion, and the two gears which are attached to the shafts of the slow rolls, as will be more fully described herein after.

Figure l isa plan view of a machine embodying my invention. Fig. 2 is an end elevation of the same.

Arepresents the top plate or frame, which has suitable openings, B, made through each of its ends, of sufficient size to receive the pairs of rolls placed therein, and which has a central slot or opening, 0, to receive the gearing. Upon the top of this plate or frame A are journaled the three shafts F, to the longer one of which is secured a single driving-pulley, G. To the longest shaft, to which the driving-pulley G is secured, are secured the two rolls H, and to each one of the two shorter shafts is secured a roll, I. I To the central portion of the shaft which has the driving-pulley secured to it is secured awide driving-pinion, J, with which pinion mesh the two gear-wheels L. These gear'wheels are much larger than the pinion, and hence will cause the shafts to which they are attached to revolve at a much slower rate of speed than the one to which the pulley is attached. The consequence is that, while the two rolls which are attached to one drivingshaft are made to revolve rapidly, the other two rolls are made to revolve in theopposite direction, but at a slower rate of speed. The consequence is that the rolls exert not only a crushing but a grinding effect upon the grain which is being reduced. It will be seen that the two sets of rolls are placed end to end, in- 5 stead of side to side, in the usual manner. The two shafts will each be made of one continuous piece, and connected to the wheels by means of setscrews, keys, or both.

For the purposeof adjusting the pressure 6 between the rolls H I, the boxes or, in which the two short shafts are journaled, are pivoted below the under side of the plate A upon the pivots orbearings b. Connected to each of these boxes a is a lever or extension, d, down 6 through which passes an adjusting-screw, 6. These screws e bear upon the top of the plate, and serve to force the lever d upward, for the purpose of forcing the rolls H I together. When the pressure of these screws upon the 7 top of the plate a is relaxed, the lever d sinks downward and the rolls H I are separated. This separation takes place because the boxes a are journaled eccentrically to the boxes of a the longer shaft. For the purpose of causing 7 these levers d to move together, they are connected together at their outer ends by the rod and this rod is adjusted by means of a central screw.

Having thus described my invention, I 8 claim- 1. In a roller-mill, the combination of the top plate or frame having the openings B through its ends and the openings 0 through its center. with the fast rolls H, a single shaft therefor, the slow rolls I, different shafts therefor, the pinion J, and the gears L, sub stantially as shown;

2. In a roller-mill, the combination of the top plate or frame having the openings B 9( through its ends and the openings (3 through its center, with the fast rolls II, a single shaft therefor, the slow rolls I, different shafts therefor, the pinion J, gears L, and a suitable regulating mechanism for each pair of r0lls,whereby the pressure between the rolls is controlled, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

ABRAHAM N. 'woLF.

Witnesses: OWEN BLUMER,

Tnos. O. GINKINGER. 

